adams



(No Model.) A

J. E. & J. W. ADAMS.

MECHANICAL MOYEMENT. No. 341,438. Patented May 11, 1886.

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UNITED STATES PATENT OFFICE.

JAMES E. ADAMS AND JOHN \V. ADAMS, OF GLASSBOROUGH, NEW JERSEY, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE NEW GIANT POWER COMPANY.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 341,438, dated May 11, 1886.

Application filed November 4, 1885. Serial No. 181,860. (No model.)

To aZ l whom, it may concern: ed with a series of teeth, projections, or in- Be It known that we, JAMES E. ADAMS and dentations, a pawl or pawls mounted on a JOHN XV. ADAMS, citizens of the United States, movable arm or arms arranged contiguous to residing at Glassborough, in the county of the driving-wheel and another arm or other Gloucester and State of New Jersey, have inarms projecting from a sleeve mounted near 5 yented certain new and useful Improvements the driving-wheel and provided with operat- 111 Mechanical Movements; and we do hereby ing strap or straps, the latter arm or arms bedeclare the following to be a full, clear, and ing provided with a pin or with pins resting exact description of the invention, such as will in a slot in the pawl or pawls, so that when IO enable others skilled in the art to which it apthe sleeve'is rotated the pawl or pawls will be pertains to make and use the same. caused to engage with the teeth, projections, This lnventlon relates to mechanical moveorindentations on the wheel and impart moments. tion to the wheel; and, finally, the invention The object of our invention is to produce a consists in the combination, with the agronp- I5 mechanical movement, whereby great power ment just mentioned, of a treadle for impartcan be exerted with comparatively small eX- ing motion to the sleeves, and means for repen'ditnre of force, which shall be of compact turning the sleeve and pawl or pawls to their and simple construction, positive and reliable respective normal positions after being op- 1n operation, and convenient and effective in erated to impart motion to the driving-wheel.

2O Sew In the accompanying drawings, forming a The invention is embodied in a device conpart of our specification, like letters of refer sisting, essentially, in a main driving-wheel enee designate corresponding parts. provided with a series of teeth, projections, Figure 1 is a side elevation of our invenor indentations, and a pawl or pawls pivoted tion,the supporting-framebei ng partly broken 25 upon a movable arm or arms mounted contigaway to disclose thedisposition of operative 7 nous to the wheel, the said pawl or pawls beparts, and Fi 2 is a vertical sectional view, ing so arranged as to be moved automatically the section being taken in a direction coinciinto contact with the wheel to give it an imdent with the shaft upon which the drivingpetus, and away from it to allow the pawl or wheel is mounted.

3o pawls to be returned to a normal position, as The device now to be described may be apo the power is applied or relieved. plied to operate any small machinery such as Furthermore, the invention consists in a de sewing-machines, churns, jig-saws, fans, or the vice comprising a main driving-wheel 'prolikein which the desideratum is to attain vided with a series of teeth, projections, or considerable speed and power with a small 55 indentations, and a pawhor pawls pivoted expense of force. In the presentembodiment upon a movable arm or arms mounted contigof the invention it is shown as applied to a uous to the wheel, and an arm or arms mountjig-saw. ed upon a sleeve or sleeves, also contiguous to In the drawings, A represents the large the wheel, the sleeve or sleeves being providmotor-wheel, which has upon one of its faces 40 ed with an operating-strap, and the last arm a series of teeth or projectiol'is, a. The wheel or arms being attached to the pawl or pawls is mounted upon a shaft, a, having hearings in such manner that a forward movement of in the frame A. the sleeve or sleeves will move the pawl or 0 represents an arm mounted loosely upon pawls into contact with the teeth. projections, the shaft a, so as to have a motion independ- 5 or indentationsof the wheel, and at the cesent thereof. The upperend of this arm is 9 sation of motion of the sleeve or sleeves will preferably weighted, and its lower end has a move the pawl or pawls back to the normal bifurcated head, 0', in which is pivoted a pawl position. consisting of two arms, d and d, extending Furthermore, theinvention consists in a deapproximately at right angles to each other.

50 Vice embracing a main driving-wheel pr0vid- The arm 01 is designed to engage the motor- [00 wheel and turn the same, and with this object in view it is made slightly pointed in order to insure engagement with the teeth of the rack. Upon the shaft a, near the arm 0, is a sleeve, B, mounted loosely upon the shaft a, which is provided at its end adjacent to the arm with an arm, I). The lower end of this arm has projecting therefrom a pin, which engages a slot in the arm (1 of the pawl. Thus it will be seen that when a rotary motion in the proper direction is given the sleeve the pin on the arm 1) moves up in the slot in the upper end of the pawl, thus throwing the lower endloutward, bringing it into contact with the teeth on the wheel, and that a continuation of this motion will revolve the wheel. A motion in i the opposite direction will cause the lower end motion of the drive-wheel is of the arm (I to descend in the slot in pawl, thus instantly moving the pawl outof contact with the wheel.

Any suitable means for imparting a rotary motion to the sleeve may be employed. In the present embodiment of the invention a treadle, E, and strap I) are shown as a means of accomplishing this. The treadle is mounted at its rear end in the frame, and its front end is adapted to receive pressure from the foot. The strap is attached at one end to the treadle, and at the other end it is attached to the sleeve and wound upon the same in a direction opposite to that in which it is desired to turn the driving-wheel. After the impetus has been given the wheel by forcing the treadle to the extent of its downward movement, the treadle is released and the sleeve returns to its normal position. This return may be effected by a spring, which is coiled when the sleeve is rotated in a direction to move the wheel, and the resiliency of this spring will return the sleeve to a proper position to receive another impetus from the treadle; or, if desired, the arrangement shown may be employed. This consists of a leaf-spring, F, attached to any suitable part of the frame, and a strap, b wound upon the sleeve in a direction opposite to that in which the strap 1) is wound. As the strap b is unwound in driving the sleeve, the strap 1) is wound upon the sleeve against the force of the spring F, and as soon as pressure is removed from the treadle the resiliency of the spring, acting upon the sleeve through the strap b, will turn thesleeve back to its normal position. The wheel A is preferably comparatively quite heavy and gears with a much smaller and lighter wheel, so that the momentum imparted to the said wheel A is not overcome between the impulses of the pawl, but, on the contrary, a continuous rotary produced by the operation of the device. 7 i r 4 The motion of the wheel may be converted into any desired motion, and in the present instance I have shown it used for operating what is termed a scroll or jig saw. For

this purpose the wheel A may have its perimeter provided with teeth, which may be made to mesh with the teeth of a pinion, G, carrying a rod, 9, which will be reciprocated by the rotation of said pinion. The rod g is pivoted to the lower arm of the saw-frame, which is mounted in the frame A in a suitable manner.

A hollow ball, H, provided with a tube leading to the place where the saw is, operates to blow away the dust. The hollow ball H is located between the table and the lower arm of the saw-frame in such position that the oscillation will compress the ball to produce the necessary current of air.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The herein-described mechanical movement, consisting in a main driving-wheel provided with a series of teeth, projections,or indentations, and a pawl or pawls pivoted upon a movable arm or arms mounted contiguous to the wheel, said pawl or pawls moving automatically into and out of contact with the teeth, projections, or indentations, as power is applied or discontinued.

2. The herein-described mechanical movement, consisting in a main driving-wheel provided with an internal series of teeth, projections, or indentations, an arm or arms loosely mounted near the wheel, apawl or pawls pivoted to the arm or arms, provided with a slot or slots, and another arm mounted contiguous to the first, and provided with a pin entering the slot in the pawl, substantially as described.

3. The herein-described mechanical movement, consisting of a main driving-wheel provided with a series of teeth, projections,or indentations, an arm or arms mounted loosely upon the shaft of the wheel, provided with a pawl or pawls having a slot, a sleeve also mounted loosely upon the shaft provided with a driving-belt, and with an arm or arms provided with a pin entering the slot in the pawl, substantially as described.

4. The herein-described mechanical movement, consisting of the wheel A, provided with a circular ratchet, the sleeve having the operating-straps wound thereon in opposite directions, and the arms, one mounted loosely upon the main shaft and the other fast with the sleeve, and the pivoted pawl secured to the arm which is mounted upon the shaft and provided with a slot entered by a pin upon the arm fast upon the sleeve.

5. The herein-described mechanical movement, consisting of the wheel A, provided with a circular ratchet, the sleeve having the operating-straps wound thereon in opposite directions, one of said straps being connected with the operating treadle and the other with the spring, and the arms, one mounted loosely upon the main shaft and the other fast with the sleeve, and the pivoted pawl secured to the arm which is mounted upon the shaft, and is provided with an inclined slot entered by a pin upon the arm fast upon the sleeve.

IIO

6. In combination with the drive-wheel A, vided with an inclined slot entered by the pin the shaft on which said wheel is mounted, the on the arm I), substantially as described. sleeve mounted loosely upon the shaft and In testimonywhereof we affix oursignatures having formed therewith the arm b, provided in presence of two witnesses.

5 at its lower end with apin,the arm a, mounted loosely upon the shaft and provided with a bifurcated lower end, and a right angular pawl mounted in the bifurcated end of the Witnesses: arm a, one end of said pawl engaging with the TAYLOR HOFFMAN, 1o ratchet on the wheel A, and the other pro- -WILLIAM SLOAN. 

